qiskit.ignis.verification.RepetitionCode
class RepetitionCode(d, T=0)
Implementation of a distance d repetition code, implemented over T syndrome measurement rounds.
Creates the circuits corresponding to a logical 0 and 1 encoded using a repetition code.
Parameters
- d (int) – Number of code qubits (and hence repetitions) used.
- T (int) – Number of rounds of ancilla-assisted syndrome measurement.
Additional information:
No measurements are added to the circuit if T=0. Otherwise T rounds are added, followed by measurement of the code qubits (corresponding to a logical measurement and final syndrome measurement round).
__init__
__init__(d, T=0)
Creates the circuits corresponding to a logical 0 and 1 encoded using a repetition code.
Parameters
- d (int) – Number of code qubits (and hence repetitions) used.
- T (int) – Number of rounds of ancilla-assisted syndrome measurement.
Additional information:
No measurements are added to the circuit if T=0. Otherwise T rounds are added, followed by measurement of the code qubits (corresponding to a logical measurement and final syndrome measurement round).
Methods
__init__(d[, T]) | Creates the circuits corresponding to a logical 0 and 1 encoded using a repetition code. |
get_circuit_list() | returnsself.circuit as a list, with |
process_results(raw_results) | param raw_resultsA dictionary whose keys are logical values, |
readout() | Readout of all code qubits, which corresponds to a logical measurement as well as allowing for a measurement of the syndrome to be inferred. |
syndrome_measurement([reset, barrier]) | Application of a syndrome measurement round. |
x([logs, barrier]) | Applies a logical x to the circuits for the given logical values. |
get_circuit_list
get_circuit_list()
Returns
self.circuit as a list, with circuit_list[0] = circuit[‘0’] circuit_list[1] = circuit[‘1’]
Return type
circuit_list
process_results
process_results(raw_results)
Parameters
raw_results (dict) – A dictionary whose keys are logical values, and whose values are standard counts dictionaries, (as obtained from the get_counts method of a qiskit.Result object).
Returns
Dictionary with the same structure as the input, but with
the bit strings used as keys in the counts dictionaries converted to the form required by the decoder.
Return type
results
Additional information:
The circuits must be executed outside of this class, so that their is full freedom to compile, choose a backend, use a noise model, etc. The results from these executions should then be used to create the input for this method.
readout
readout()
Readout of all code qubits, which corresponds to a logical measurement as well as allowing for a measurement of the syndrome to be inferred.
syndrome_measurement
syndrome_measurement(reset=True, barrier=False)
Application of a syndrome measurement round.
Parameters
- reset (bool) – If set to true add a boolean at the end of each round
- barrier (bool) – Boolean denoting whether to include a barrier at the end.
x
x(logs=('0', '1'), barrier=False)
Applies a logical x to the circuits for the given logical values.
Parameters
- logs (list or tuple) – List or tuple of logical values expressed as strings.
- barrier (bool) – Boolean denoting whether to include a barrier at the end.